Zero-Day Alert: Apple Rolls Out iOS, macOS, and Safari Patches for 2 Actively Exploited Flaws
Vulnerabilities mentionedAll →
| CVE | Vulnerability | CVSS | EPSS | Flags | Affected | Exposure | Published |
|---|---|---|---|---|---|---|---|
| CVE-2023-42917 +1 in the same advisory: …42916 | WebKit Memory Corruption in Apple iOS, macOS, and Safari Enables Arbitrary Code Execution CVE-2023-42917 is a memory corruption flaw (CWE-787, out-of-bounds write class) in Apple's WebKit browser engine, addressed with improved locking. It is triggered when a device processes maliciously crafted web content, meaning an attacker can reach vulnerable code simply by getting a user to load attacker-controlled web content. Successful exploitation may lead to arbitrary code execution with the privileges of the affected application. All users of the affected Apple platforms — iPhone, iPad, Mac (Sonoma), and Safari — are exposed, and the CPE data also indicates WebKitGTK as shipped by Debian and Fedora is in scope. The flaw is being actively exploited: Apple reported it was exploited in the wild against versions of iOS before 16.7.1, it was added to CISA KEV on 2023-12-04, and EPSS assigns a 9.4% probability of exploitation in the next 30 days (95th percentile). Do: Upgrade to iOS 17.1.2, iPadOS 17.1.2, macOS Sonoma 14.1.2, and Safari 17.1.2; organizations with devices on the older iOS 16 line should check Apple's advisories for backported fixes, since the in-the-wild exploitation was reported against iOS versions before 16.7.1. Linux defenders running Debian or Fedora should apply the latest WebKitGTK security updates from their distribution. As a KEV entry (added 2023-12-04), remediation is mandatory for federal agencies per CISA's required action; verify device versions via MDM or inventory and prioritize internet-facing and high-risk users. | 8.8 group max | 9% | KEV |
| masson the order of 1 billion+ devices/users (Apple's active iPhone/iPad/Mac/Safari installed base) | |
| CVE-2023-6345 | Integer Overflow in Google Chrome's Skia Enables Sandbox Escape (Actively Exploited) CVE-2023-6345 is an integer overflow (CWE-190) in Skia, the 2D graphics rendering library used by Google Chrome and other Chromium-based browsers. It is triggered when a compromised renderer processes a malicious file, allowing a remote attacker who has already gained code execution in the renderer process to escape the Chrome sandbox and run code with broader privileges. Users of Google Chrome prior to 119.0.6045.199 are affected, as are Chromium-based derivatives including Microsoft Edge (Chromium) and Chromium packages shipped by Debian and Fedora. The flaw was rated High by Chromium, carries a CVSS 3.1 score of 9.6, and was added to CISA's Known Exploited Vulnerabilities catalog on 2023-11-30. Google has patched the bug in Chrome 119.0.6045.199, and news reporting confirms it was being actively exploited in the wild at the time of the fix. Do: Update Google Chrome to 119.0.6045.199 or later and restart the browser to fully apply the fix; on Debian and Fedora, apply the updated chromium packages from the distro repositories, and allow Microsoft's Chromium fix to flow into Edge before trusting affected builds. Verify browser versions (chrome://version or equivalent) across managed fleets, and note that because this is CISA KEV-listed (added 2023-11-30), US federal agencies must patch per vendor instructions or discontinue use by the required deadline. | 9.6 | 16% | KEV |
| masshundreds of millions to billions of Chrome and Chromium-based browser installations |
Full article371 words · extracted from thehackernews.com · click to collapse
Ravie LakshmananDec 01, 2023Spyware / Threat Analysis
Apple has released software updates for iOS, iPadOS, macOS, and Safari web browser to address two security flaws that it said have come under active exploitation in the wild on older versions of its software.
The vulnerabilities, both of which reside in the WebKit web browser engine, are described below -
- CVE-2023-42916 - An out-of-bounds read issue that could be exploited to leak sensitive information when processing web content.
- CVE-2023-42917 - A memory corruption bug that could result in arbitrary code execution when processing web content.
Apple said it's aware of reports exploiting the shortcomings "against versions of iOS before iOS 16.7.1," which was released on October 10, 2023. Clément Lecigne of Google's Threat Analysis Group (TAG) has been credited with discovering and reporting the twin flaws.
The iPhone maker did not provide additional information regarding ongoing exploitation, but previously disclosed zero-days in iOS have been used to deliver mercenary spyware targeting high-risk individuals, such as activists, dissidents, journalists, and politicians.
It's worth pointing out here that every third-party web browser that's available for iOS and iPadOS, including Google Chrome, Mozilla Firefox, and Microsoft Edge, and others, is powered by the WebKit rendering engine due to restrictions imposed by Apple, making it a lucrative and broad attack surface.
The updates are available for the following devices and operating systems -
- iOS 17.1.2 and iPadOS 17.1.2 - iPhone XS and later, iPad Pro 12.9-inch 2nd generation and later, iPad Pro 10.5-inch, iPad Pro 11-inch 1st generation and later, iPad Air 3rd generation and later, iPad 6th generation and later, and iPad mini 5th generation and later
- macOS Sonoma 14.1.2 - Macs running macOS Sonoma
- Safari 17.1.2 - Macs running macOS Monterey and macOS Ventura
With the latest security fixes, Apple has remediated as many as 19 actively exploited zero-days since the start of 2023. It also comes days after Google shipped fixes for a high-severity flaw in Chrome (CVE-2023-6345) that has also come under real-world attacks, making it the seventh zero-day to be patched by the company this year.
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Text extracted automatically; images, tables and formatting may be missing. Original: https://thehackernews.com/2023/12/zero-day-alert-apple-rolls-out-ios.html